Re: WLM and DDF enclaves

2024-03-15 Thread patrickfalcone7
from my Verizon, Samsung Galaxy smartphone Original message From: Martin Packer Date: 3/14/24 12:10 (GMT-05:00) To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: WLM and DDF enclaves They should be below Db2 Engine in the hierarchy…IRLM should be in SYSSTC.DBM1, MSTR, DIST should

Re: WLM and DDF enclaves

2024-03-14 Thread Martin Packer
: IBM Mainframe Discussion List on behalf of Jaime Fernandez <05f045ad6641-dmarc-requ...@listserv.ua.edu> Date: Thursday, 14 March 2024 at 14:26 To: IBM-MAIN@LISTSERV.UA.EDU Subject: [EXTERNAL] WLM and DDF enclaves Hi fellow listers, Newcomer here, so... I hope my question makes sens

Re: WLM and DDF enclaves

2024-03-14 Thread Colin Paice
You might try to get WLM/RMF reports on response times to get a base line Colin On Thu, 14 Mar 2024 at 14:26, Jaime Fernandez < 05f045ad6641-dmarc-requ...@listserv.ua.edu> wrote: > Hi fellow listers, > > Newcomer here, so... I hope my question makes sense. > > We have so

WLM and DDF enclaves

2024-03-14 Thread Jaime Fernandez
Hi fellow listers, Newcomer here, so... I hope my question makes sense. We have some amount of business critical distributed online transactions, running on enclaves into a Db2 zOS subsystem. Our current WLM configuration assigns them a specific service class with importance 1 and a velocity

Re: WLM - service class and Dispatch priority

2024-03-06 Thread Scott Chapman
Well, a significant portion of the value proposition for WLM when it was introduced in the mid 90s was in fact to eliminate the static assignment of dispatching priorities and the fact that WLM would potentially adjust the dispatching priorities every 10 seconds to attempt to balance

WLM - service class and Dispatch priority

2024-03-05 Thread Peter
Hello I must confess that I am not a WLM expert but I just wanted to understand how this works In our environment we have few started where their Service class(Velocity) and Dispatch priority keeps changing on its own. Based on what constraint or definition in WLM the service class and Dispatch

Re: How to reduce the overhead of WLM?

2024-03-05 Thread Wendell Lovewell
from 3000 to 15000 didn't seem to have an effect, but I was hesitant at shooting too high. Allan: We have little to no usage of those subsystems--even CICS is pretty lightly used. My goal is to reduce the CPU usage in the WLM & other system address spaces because we pay for CPU cycles. Peter:

Re: EXTERNAL EMAIL: Re: How to reduce the overhead of WLM?

2024-03-05 Thread Jerry Whitteridge
EMAIL: Re: How to reduce the overhead of WLM? Classification: Confidential The most important resource in most shops is CPU and is usually the critical factor in WLM adjustments. Judicious user of SC period and IMPortance is far more effective in controlling the distribution of CPU. . I would

Re: How to reduce the overhead of WLM?

2024-03-05 Thread Farley, Peter
-MAIN@LISTSERV.UA.EDU Subject: Re: How to reduce the overhead of WLM? Classification: Confidential The most important resource in most shops is CPU and is usually the critical factor in WLM adjustments. Judicious user of SC period and IMPortance is far more effective in controlling

Re: How to reduce the overhead of WLM?

2024-03-05 Thread Allan Staller
Classification: Confidential The most important resource in most shops is CPU and is usually the critical factor in WLM adjustments. Judicious user of SC period and IMPortance is far more effective in controlling the distribution of CPU. . I would not overload SYSSTC with work

Re: How to reduce the overhead of WLM?

2024-03-05 Thread Tom Marchant
Would it help to have more of those address spaces in SYSSTC so that WLM doesn't try to manage them? -- Tom Marchant On Tue, 5 Mar 2024 01:03:27 +, Graham Harris wrote: >A few years back, I did a deep dive into tuning CPU usage across a >multitude of very small z/OS guests unde

Re: How to reduce the overhead of WLM?

2024-03-05 Thread Allan Staller
Classification: Confidential Agreed! -Original Message- From: IBM Mainframe Discussion List On Behalf Of Anthony Hirst Sent: Tuesday, March 5, 2024 7:18 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: How to reduce the overhead of WLM? [CAUTION: This Email is from outside

Re: How to reduce the overhead of WLM?

2024-03-05 Thread Anthony Hirst
If you are running a lot of CICS regions, you might want to look at reducing the mastask values, my understanding is that WLM create's PB for every possible active task in CICS and they get scanned every 250 ms too. On Mon, Mar 4, 2024 at 10:15 PM Jim Mulder wrote: > The most important th

Re: How to reduce the overhead of WLM?

2024-03-05 Thread Allan Staller
, MQ) This is a combination of experience and remembrance from a WLM training class. Most people try to over-control WLM instead of letting it do its thing.\ HTH, -Original Message- From: IBM Mainframe Discussion List On Behalf Of Wendell Lovewell Sent: Monday, March 4, 2024 5:08 PM

Re: How to reduce the overhead of WLM?

2024-03-04 Thread Jim Mulder
-Original Message- From: IBM Mainframe Discussion List On Behalf Of Wendell Lovewell Sent: Monday, March 4, 2024 6:08 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: How to reduce the overhead of WLM? This is probably a strange question, but is there a way to reduce WLM cpu usage? Here's

Re: How to reduce the overhead of WLM?

2024-03-04 Thread Graham Harris
A few years back, I did a deep dive into tuning CPU usage across a multitude of very small z/OS guests under z/VM, and WLM was certainly a big hitter for many of them, but as there were so many instances, I was able to see notable differences in WLM use between "LPARs", which was

How to reduce the overhead of WLM?

2024-03-04 Thread Wendell Lovewell
This is probably a strange question, but is there a way to reduce WLM cpu usage? Here's the situation: - The system is a lightly used development system. Unless something is in a loop (very rare), CPU % probably is usually less than 10%. And except for system regions & CICS, it's

Re: WLM for z/OSMF

2023-05-14 Thread Mike Shorkend
processors. On Fri, 12 May 2023 at 11:57, Ed Jaffe wrote: > On 5/11/2023 1:08 PM, Colin Paice wrote: > > We are setting up z/OSMF for the 1st time (can't really avoid it any > > longer). I've noticed that the IZUANG1 task has a default WLM SC of > SYSSTC > > (which is probably O

Re: WLM for z/OSMF

2023-05-12 Thread Ed Jaffe
On 5/11/2023 1:08 PM, Colin Paice wrote: We are setting up z/OSMF for the 1st time (can't really avoid it any longer). I've noticed that the IZUANG1 task has a default WLM SC of SYSSTC (which is probably OK), but the IZUSVR1 task has a default of Discretionary - which is probably NOT OK. Do you

Re: WLM for z/OSMF

2023-05-11 Thread Attila Fogarasi
> We are setting up z/OSMF for the 1st time (can't really avoid it any > longer). I've noticed that the IZUANG1 task has a default WLM SC of SYSSTC > (which is probably OK), but the IZUSVR1 task has a default of Discretionary > - which is probably NOT OK. Do you have a recommendation for

WLM for z/OSMF

2023-05-11 Thread Colin Paice
I was asked We are setting up z/OSMF for the 1st time (can't really avoid it any longer). I've noticed that the IZUANG1 task has a default WLM SC of SYSSTC (which is probably OK), but the IZUSVR1 task has a default of Discretionary - which is probably NOT OK. Do you have a recommendation

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-14 Thread Pommier, Rex
Woo-hoo! Yes, the context came through. :-) Rex -Original Message- From: IBM Mainframe Discussion List On Behalf Of Bill Giannelli Sent: Tuesday, March 14, 2023 5:11 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: [EXTERNAL] Re: WLM Couple dataset? Hi Rex, No worries, I want my

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-14 Thread Bill Giannelli
om: IBM Mainframe Discussion List On Behalf Of >Matthew Stitt >Sent: Friday, March 10, 2023 10:35 AM >To: IBM-MAIN@LISTSERV.UA.EDU >Subject: Re: [EXTERNAL] Re: WLM Couple dataset? > >I use the LISTSERV web site. On the left there are two apostrophes (quote >marks). Those will i

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-10 Thread Pommier, Rex
Mainframe Discussion List On Behalf Of Matthew Stitt Sent: Friday, March 10, 2023 10:35 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: [EXTERNAL] Re: WLM Couple dataset? I use the LISTSERV web site. On the left there are two apostrophes (quote marks). Those will include the entire thread (so far

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-10 Thread Matthew Stitt
I use the LISTSERV web site. On the left there are two apostrophes (quote marks). Those will include the entire thread (so far). It is considered good practice to remove the IBM-MAIN stuff at the bottom. Matthew On Thu, 9 Mar 2023 18:33:08 -0500, Tony Harminc wrote: >On Thu, 9 Mar 2023 at

Re: WLM Couple dataset?

2023-03-10 Thread Allan Staller
Classification: Confidential Horse hockey -Original Message- From: IBM Mainframe Discussion List On Behalf Of Bill Giannelli Sent: Thursday, March 9, 2023 3:52 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: WLM Couple dataset? [CAUTION: This Email is from outside the Organization

Re: WLM Couple dataset?

2023-03-10 Thread Allan Staller
Classification: Confidential D XCF,COUPLE,TYPE=WLM -Original Message- From: IBM Mainframe Discussion List On Behalf Of Mike Schwab Sent: Thursday, March 9, 2023 2:24 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: WLM Couple dataset? [CAUTION: This Email is from outside the Organization

Re: WLM Couple dataset?

2023-03-10 Thread Michael Babcock
We re-INIT the CFRM, XCF, and LOGR at DR. The only one we reuse is WLM. On Thu, Mar 9, 2023 at 8:41 PM Gabriel Tully wrote: > Bill, > > IBM doesn't recommend mirroring the couple data sets [1]. There may not be > serious ramifications for the WLM CDS, but it could be on the

Re: WLM Couple dataset?

2023-03-09 Thread Gabriel Tully
Bill, IBM doesn't recommend mirroring the couple data sets [1]. There may not be serious ramifications for the WLM CDS, but it could be on the same volume with a more critical Sysplex CDS or CFRM CDS. The last time I asked IBM about mirroring CDSes a severe tone was employed to strongly

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-09 Thread Tom Marchant
On the listserv web page, to the left of the top of the place where you type your reply, there is a large double quote. Click on that. -- Tom Marchant On Thu, 9 Mar 2023 18:33:08 -0500, Tony Harminc wrote: >On Thu, 9 Mar 2023 at 18:27, Bill Giannelli wrote: > >> I am in the listserv web

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-09 Thread Tony Harminc
On Thu, 9 Mar 2023 at 18:27, Bill Giannelli wrote: > I am in the listserv web page. I do not see 3 dots above the send button > Sorry - my advice was for Gmail only. I never use the listserv page to post things, so can't help you. But surely you aren't the only one, so perhaps someone will

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-09 Thread Bill Giannelli
I am in the listserv web page. I do not see 3 dots above the send button -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-09 Thread Tony Harminc
On Thu, 9 Mar 2023 at 18:14, Bill Giannelli wrote: > I apologize, it is inadvertent. > How do I include the whole thread? > In Gmail (which you seem to be using), after you click Reply, click the three little dots icon that's just above the Send button at the bottom. But please do trim your

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-09 Thread Bill Giannelli
I apologize, it is inadvertent. How do I include the whole thread? -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Re: [EXTERNAL] Re: WLM Couple dataset?

2023-03-09 Thread Pommier, Rex
] Re: WLM Couple dataset? not that makes sense to me... -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Re: WLM Couple dataset?

2023-03-09 Thread Bill Giannelli
not that makes sense to me... -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Re: WLM Couple dataset?

2023-03-09 Thread Gibney, Dave
Do they give a reason? Or explanation? > -Original Message- > From: IBM Mainframe Discussion List On > Behalf Of Bill Giannelli > Sent: Thursday, March 9, 2023 1:52 PM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Re: WLM Couple dataset? > > > we are being told by

Re: WLM Couple dataset?

2023-03-09 Thread Bill Giannelli
we are being told by our managed service vendor they have to manually update the DR WLM Couple datasets. that they cant be mirrored.. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists

Re: WLM Couple dataset?

2023-03-09 Thread Michael Babcock
We use Global Mirror to keep our WLM dataset in sync to our DR system. On Thu, Mar 9, 2023 at 2:49 PM Bill Giannelli wrote: > yes I understand that. but we had policy definitions in PROD that were not > copied over to DR. > We thought the WLM Couple dataset could be mirrored in our

Re: WLM Couple dataset?

2023-03-09 Thread Bill Giannelli
yes I understand that. but we had policy definitions in PROD that were not copied over to DR. We thought the WLM Couple dataset could be mirrored in our DR. We are being told they have to be manually kept in synch now. thanks Bill

Re: WLM Couple dataset?

2023-03-09 Thread Dave Jousma
ssage: INFO IBM-MAIN Just an FYI, you do not need to know the couple dataset name for WLM to update the WLM policy. You do it through the panels. -- For IBM-MAIN subscribe / signoff / archive access instructions, send

Re: WLM Couple dataset?

2023-03-09 Thread Bill Giannelli
thank you both!! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Re: WLM Couple dataset?

2023-03-09 Thread Mickey Virdi
On Thu, 9 Mar 2023 14:23:43 -0600, Mike Schwab wrote: >https://www.ibm.com/docs/en/zos/2.4.0?topic=command-displaying-workload-manager-information-wlm > >D WLM > >On Thu, Mar 9, 2023 at 2:19 PM Bill Giannelli wrote: >> >> where can I find what the WLM Couple data

Re: WLM Couple dataset?

2023-03-09 Thread Mike Schwab
https://www.ibm.com/docs/en/zos/2.4.0?topic=command-displaying-workload-manager-information-wlm D WLM On Thu, Mar 9, 2023 at 2:19 PM Bill Giannelli wrote: > > where can I find what the WLM Couple dataset is? > we need a policy updated and then the WLM Couple Dataset mirrored in our DR.

WLM Couple dataset?

2023-03-09 Thread Bill Giannelli
where can I find what the WLM Couple dataset is? we need a policy updated and then the WLM Couple Dataset mirrored in our DR. thanks Bill -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists

Re: Comparing WLM Service Definitions

2023-02-22 Thread Michael Oujesky
In a past life, I used the MXg REXXWLM to convert the old and new policy definitions to SAS data bases and compared the two, Another is to just print the old and new and Super-C the two. Michael At 05:50 AM 2/22/2023, Gadi Ben-Avi wrote: Hi, Is there a way to compare two WLM Service

Re: Comparing WLM Service Definitions

2023-02-22 Thread Colin Paice
https://www.ibm.com/support/pages/listing-wlm-couple-policy-definitions Then use diff Colin On Wed, 22 Feb 2023 at 11:51, Gadi Ben-Avi wrote: > Hi, > Is there a way to compare two WLM Service Definitions? > > Tha

Comparing WLM Service Definitions

2023-02-22 Thread Gadi Ben-Avi
Hi, Is there a way to compare two WLM Service Definitions? Thanks Gadi -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Re: DB2 DSNTRVFY WLM verify job stops WLM

2023-02-14 Thread Lance D. Jackson
Bill, Typically WLM appl. environments enter a stopped state due to a program error in one of the programs running in that address space. Are you certain that the specific WLM instances were in a normal state at the outset? It would be unusual for one of the Db2-supplied routines to have

Re: DB2 DSNTRVFY WLM verify job stops WLM

2023-02-14 Thread Keith Gooding
In my experience DB2 WLM environments are stopped because the associated started task failed - Eg abend or JCL error. Check the output and syslog. I also once forgot to copy the STC JCL from the proclib which I use for dB2 installation to a system proclib library so no STC output just a syslog

DB2 DSNTRVFY WLM verify job stops WLM

2023-02-14 Thread Bill Giannelli
I am running the DB2 install job DSNTRVFY used to verify WLM Application Environments. It seems it stop some of my Application Environments. How could I find out why? I am posting here after not getting any responses on DB2-L. thanks for any help or direction. Bill

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Boesel Guillaume
"Great, I will use the "128" method." Sorry, I meant, I will NOT use the "128" method and i will use my initial thought : "I thought that it was simply the amount of connect time in microseconds divided by the total I/O count, but 3527936 / 19661 = 179.4382 that is far away of 22968

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Guillaume Boesel
Great, I will use the "128" method. Thanks you all ! > Le 26 nov. 2022 à 18:47, Todd J. Gagle a écrit : > > Ed, > > Thanks for correcting my typo. > > Regarding the WLM information, the information that you mention is WLM > related as it is a detailed

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Todd J. Gagle
Ed, Thanks for correcting my typo. Regarding the WLM information, the information that you mention is WLM related as it is a detailed display from the WMSYSSUM command. As others have said, the values are displayed in seconds, but the source value must be multiplied by 128 first to convert

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Ed Jaffe
On 11/26/2022 9:17 AM, Guillaume Boesel wrote: Thank you Todd for your reply, but if I understand well, the following WLM view of SYSVIEW uses WLM RCAA for the values of I/O count, connect time, ... as I retrieve the same values using IWMRCOLL/RCAE but it uses another control block

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Guillaume Boesel
Thank you Todd for your reply, but if I understand well, the following WLM view of SYSVIEW uses WLM RCAA for the values of I/O count, connect time, ... as I retrieve the same values using IWMRCOLL/RCAE but it uses another control block for the average values (didn't find EMCB in data areas

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Guillaume Boesel
Thank you Graham for the formulae, it seems magic :) Le 26/11/2022 à 14:51, Graham Harris a écrit : For each I/O metric, if you divide the value by the average, and multiply by 128, then you roughly get the IOrate. It is the same on our systems. always 128. Whether it is intentional, or

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Todd J. Gagle
The DASD service times calculated by SYSVIEW do not use the WLM control blocks. SYSVIEW uses the data found in the EMCB control blocks. The times and counts shown in SYSVIEW can be viewed in real-time over the last hour in 1 minute intervals. Within SYSVIEW, you can view this information using

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Graham Harris
For each I/O metric, if you divide the value by the average, and multiply by 128, then you roughly get the IOrate. It is the same on our systems. always 128. Whether it is intentional, or there are some wrong sums being done somewhere, i cant say. On Sat, 26 Nov 2022 at 09:43, Boesel Guillaume

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Boesel Guillaume
Thanks for your reply but my problem was not really about RCAA datas. My question is how SYSVIEW can calculate that average connect time is 0.022968 second from the total of 3.527936 seconds of connect time. You are right about RCAA 128 microseconds unit. I retrieved these informations thanks

Re: How to calculate average dasd response time from WLM Period ?

2022-11-26 Thread Attila Fogarasi
the metrics change over time. On Sat, Nov 26, 2022 at 6:48 PM Boesel Guillaume wrote: > Hi, > Is somebody know how to calculate the average dasd response time from WLM > Period's connect/disconnect/wait/iosq times ? > > On my shop, we use SYSVIEW. In his option WLM, we can see

How to calculate average dasd response time from WLM Period ?

2022-11-25 Thread Boesel Guillaume
Hi, Is somebody know how to calculate the average dasd response time from WLM Period's connect/disconnect/wait/iosq times ? On my shop, we use SYSVIEW. In his option WLM, we can see the I/O metrics but I don't understand how is calculated the average response time. For the example, how

Re: How to change WLM classification rules

2022-07-26 Thread Keith Gooding
22, at 12:34, Keith Gooding >> <034af3894af4-dmarc-requ...@listserv.ua.edu> wrote: >> >> This is a ‘newbie’ question (from someone who has forgotten a lot about >> z/OS). >> >> On a development system our WLM service definition does not get much >> a

Re: How to change WLM classification rules

2022-07-26 Thread Keith Gooding
om someone who has forgotten a lot about > z/OS). > > On a development system our WLM service definition does not get much > attention. I wanted to make a simple change to classification rules and also > to a service class definition. I used z/OSMF but I think I would have the

How to change WLM classification rules

2022-07-26 Thread Keith Gooding
This is a ‘newbie’ question (from someone who has forgotten a lot about z/OS). On a development system our WLM service definition does not get much attention. I wanted to make a simple change to classification rules and also to a service class definition. I used z/OSMF but I think I would have

Training for WLM/RMF

2022-04-01 Thread Peter
Hello One of my colleague is looking for training on WLM/RMF. If there are any retired mainframers who are willing to provide training or some level of knowledge on these subjects. Please contact me offlist. Regards Peter

Re: Velocity in WLM - Clarification

2022-03-21 Thread Brian Westerman
space that was a lower velocity had more memory, but the amount of memory use is a factor of the memory that a space getmains, and WLM isn't really involved there. Although, when it comes to something that has a tremendous amount of memory allocated you don't want to cause thrashing by having

Re: Velocity in WLM - Clarification

2022-03-21 Thread Andrew Rowley
running time. TASKA would be the type of work that is hard to manage with a goal, and (if it is important) is a good candidate for SYSSTC. WLM is as much about working out which workloads should have resources taken away when the system is busy, as which are the most important. Address spaces which

Re: Velocity in WLM - Clarification

2022-03-21 Thread Allan Staller
s determination is made by comparing the achieved velocity to the target velocity 2 pieces of work with the same velocity may get wildly different perceived performance. When everything is free, WLM has very little to do. When things are constrained, WLM will direct resources to the most

Velocity in WLM - Clarification

2022-03-21 Thread Peter
Hello, I must confess that I am new to WLMs. I have inherited an environment where the last update done in WLM was in the year 2001 and after that it was never changed. I have observed that the system address space is assigned with VELOCITY_80 and few ISV vendors applications are assigned

Re: Querying WLM address space CPU delays

2021-03-17 Thread Scott Chapman
Alas no, but there's a number of products out there that will read said records, including our own. ;) Pivotor does have a free tier, but it's not open source. Scott Chapman -- For IBM-MAIN subscribe / signoff / archive

Re: Querying WLM address space CPU delays

2021-03-16 Thread Burgess, Otto A. (CTR)
Scott, can you share a snip of code you have looking at delay samples from type 72 data? Thanks -Original Message- From: IBM Mainframe Discussion List On Behalf Of Scott Chapman Sent: Tuesday, March 16, 2021 7:50 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Querying WLM address space

Re: Querying WLM address space CPU delays

2021-03-16 Thread Scott Chapman
SRM/WLM are already sampling the work running on the system. SMF 72 contains delay samples. Including by report class. You can define up to 2047 report classes so you can get a good bit of granularity. Maybe not down to a specific batch job, but probably more than granular enough to understand

Querying WLM address space CPU delays

2021-03-15 Thread Brian Chapman
running this service for every active ASID on the system (roughly 150 on our sandbox system) every quarter second (our WLM interval) is not cheap. Is there a better solution for collecting this data or am I missing something about these WLM services? Thank

Re: WLM Service Classes

2021-02-16 Thread Cheryl Watson
This is usually very misunderstood. It's really the number of service class PERIODS WITH velocity or response GOALS (i.e. with an importance level). The reason is because WLM on each system will wake up every ten seconds (that's an eternity in a z14!) to see if goals are being missed. It starts

Re: WLM Service Classes

2021-02-16 Thread Mark Jacobs
We're in the software developmental business and one of our customers reported a problem when 100 WLM service classes were defined and active. We needed to reproduce their environment to test a fix. Once I read the advice "don't do it", I used one of our stand-alone z/OS system

Re: WLM Service Classes

2021-02-16 Thread Martin Packer
We normally put it this way: Too many ACTIVE service class periods with too little work in each of them makes it difficult for WLM to be helpful. Cheers, Martin Martin Packer Systems Investigator & Performance Troubleshooter, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twi

Re: WLM Service Classes

2021-02-16 Thread Mark Jacobs
: > Mark, > > IBM recommends < 30 Service Classes. WLM has a limited amount of time to > cycle through the WLM service classes, and if > 30 service classes, IBM says > WLM can't complete it in time. > > Jerry > > -Original Message- > > From:

Re: WLM Service Classes

2021-02-16 Thread Edgington, Jerry
Mark, IBM recommends < 30 Service Classes. WLM has a limited amount of time to cycle through the WLM service classes, and if > 30 service classes, IBM says WLM can't complete it in time. Jerry -Original Message- From: IBM Mainframe Discussion List On Behalf Of Mark Jacob

WLM Service Classes

2021-02-16 Thread Mark Jacobs
I seem to recall that there's a recommendation not to exceed a certain number of defined WLM service classes for *reasons*. Is my recollection correct? Mark Jacobs Sent from [ProtonMail](https://protonmail.com), Swiss-based encrypted email. GPG Public Key - https://api.protonmail.ch/pks

Re: Using accounting information in WLM classification rules

2020-11-04 Thread Martin Packer
Gadi Ben-Avi To: IBM-MAIN@LISTSERV.UA.EDU Date: 04/11/2020 10:15 Subject:[EXTERNAL] Re: Using accounting information in WLM classification rules Sent by:IBM Mainframe Discussion List Thanks, But at this stage, it's for regular jobs. Gadi -Original Message- From:

Re: Using accounting information in WLM classification rules

2020-11-04 Thread Gadi Ben-Avi
Thanks, But at this stage, it's for regular jobs. Gadi -Original Message- From: IBM Mainframe Discussion List On Behalf Of Martin Packer Sent: Wednesday, November 4, 2020 12:07 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Using accounting information in WLM classification rules

Re: Using accounting information in WLM classification rules

2020-11-04 Thread Martin Packer
es (With Marna Walle): https://anchor.fm/marna-walle Youtube channel: https://www.youtube.com/channel/UCu_65HaYgksbF6Q8SQ4oOvA From: Gadi Ben-Avi To: IBM-MAIN@LISTSERV.UA.EDU Date: 04/11/2020 08:53 Subject:[EXTERNAL] Using accounting information in WLM classification rules Sent

Using accounting information in WLM classification rules

2020-11-04 Thread Gadi Ben-Avi
Hi, I was asked to investigate using accounting information in WLM classification rules. I saw that I can use AI as the type. What does the value of name look like? Are there any pitfalls I should be aware of? We are running z/OS v2.4 Thanks Gadi

Re: Can you set a FIXED dispatching priority using WLM?

2020-09-15 Thread Seymour J Metz
WLM doesn't support fixed priorities, but you may be able to achieve your underlying goal by the way you categorize your workload. I miss the fine granularity, but WLM is what we have. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 From: IBM

Re: Can you set a FIXED dispatching priority using WLM?

2020-09-15 Thread Salva Carrasco
No, but setting the SRVCLASS as CPU CRITICAL is very similar. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

Re: Can you set a FIXED dispatching priority using WLM?

2020-09-15 Thread Martin Packer
ries (With Marna Walle): https://anchor.fm/marna-walle Youtube channel: https://www.youtube.com/channel/UCu_65HaYgksbF6Q8SQ4oOvA From: Sam Golob To: IBM-MAIN@LISTSERV.UA.EDU Date: 15/09/2020 15:56 Subject:[EXTERNAL] Can you set a FIXED dispatching priority using WLM?

Can you set a FIXED dispatching priority using WLM?

2020-09-15 Thread Sam Golob
Dear Folks,     Question.  Can you set a FIXED dispatching priority in WLM, like in the old IPS, ICS, OPT days?     Thanks     All the best. Sincerely,    Sam -- For IBM-MAIN subscribe / signoff / archive

Re: WLM query

2020-08-24 Thread Sean Gleann
Thank you, Massimo - that solved the problem. 'Resource Group' is something I've never used before - my WLM expertise stopped developing about 15 years ago & ISTR the concept just didn't exist back then. Regards Sean On Mon, 24 Aug 2020 at 09:22, Massimo Biancucci wrote: > Sean, > &

Re: WLM query

2020-08-24 Thread Massimo Biancucci
Sean, AFAIK WLM runs and manages continuously the workload setting DP as needed (if there's no CPU contention ... so no problems). Its main task is to make all the AS as fast as they can. If there's available CPU for everybody every AS will take as much as it can. If you want a single

WLM query

2020-08-24 Thread Sean Gleann
Is there a way to force a maximum CPU% utilisation for a specific task? Please correct me if I'm wrong here, but it is my understanding that WLM only really starts 'doing it's stuff' when the system as a whole is heavily loaded. For example: - If my system is running at 80%, and a new incoming

Re: WLM Guidance/Suggestions ! ! !

2020-02-03 Thread Andreas von Imhof
What Kees has written is correct. My rule of thumb is the faster the CP the lower the velocity. With CPU upgrades I typically revise the velocity down. It would help us if you would post a snapshot of the SUM report in RMF III, then we have all the info and not just a tiny bit and we can help

Re: WLM Guidance/Suggestions ! ! !

2020-02-03 Thread Vernooij, Kees (ITOP NM) - KLM
for other jobs. Kees. -Original Message- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Pesce, Andy Sent: 30 January 2020 15:24 To: IBM-MAIN@LISTSERV.UA.EDU Subject: WLM Guidance/Suggestions ! ! ! I have recently replace an IBM-2828 that had 5 GP's

Re: WLM Guidance/Suggestions ! ! !

2020-01-30 Thread Edward Finnell
Cheryl hasn't piped in for awhile. Widely published and referenced tuning metrics and Goal Tender software available at www.watsonwalker.com In a message dated 1/30/2020 10:36:33 PM Central Standard Time, and...@blackhillsoftware.com writes: >From my experience on systems with limited CPs

Re: WLM Guidance/Suggestions ! ! !

2020-01-30 Thread Andrew Rowley
From my experience on systems with limited CPs (albeit some time ago): - Velocities need to be reviewed. Achievable velocities might be much lower than on a system with more CPs. - It is critical that goals are achievable. The goal tells WLM when it can take resources away from high

Re: WLM Guidance/Suggestions ! ! !

2020-01-30 Thread Martin Packer
nnel: https://www.youtube.com/channel/UCu_65HaYgksbF6Q8SQ4oOvA From: "Pesce, Andy" To: IBM-MAIN@LISTSERV.UA.EDU Date: 30/01/2020 14:24 Subject: [EXTERNAL] WLM Guidance/Suggestions ! ! ! Sent by:IBM Mainframe Discussion List I have recently replace an IBM-2

WLM Guidance/Suggestions ! ! !

2020-01-30 Thread Pesce, Andy
I have recently replace an IBM-2828 that had 5 GP's to a newer model machine IBM-3907-ZR1 with only 2 GP's. Does anyone know of a guide or paper or something that might have some things to look at or modify when reducing the number of GP's. I have 2 classes of service for my batch jobs.One

Re: WLM Exit Samples

2019-11-21 Thread Salva Carrasco
Have you try DGAXWLMX? What do you want to do with the exit? -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN

WLM Exit Samples

2019-11-19 Thread David Spiegel
Hi, Does anyone have WLM Exit code samples that they're willing to share? The WLM Exit can be from Classic Federation Server or Connect Direct. Thanks and regards, David -- For IBM-MAIN subscribe / signoff / archive access

WLM Exit for IBM InfoSphere Classic Federation Server

2019-11-17 Thread David Spiegel
Hi, I've been asked to design/code a WLM Exit for IBM InfoSphere Classic Federation Server. I have some questions regarding this and would be grateful for any assistance. Thanks and regards, David -- For IBM-MAIN subscribe

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